Document Outline

• Title page
• Table of contents
• 1 Introduction
  • 1.1 Purpose of program
  • 1.2 General information
    • Hardware requirements for the PC
    • Demo version
    • Registration
  • 1.3 Installation
    • Installation of software and VA Computrace Interface
    • Installation of software and add-on board
    • Software upgrade with add-on board
    • Installation of Dosimats
    • Installation of 813 Compact Autosampler
    • Hardware settings for Dosimats
    • Deinstallation
  • 1.4 Overview of program windows
  • 1.5 Overview of file types
  • 1.6 Context sensitive menus
• 2 Main window
  • 2.1 Main window overview
    • Main window elements
    • Main window menus
    • Main window icons
  • 2.2 Starting/closing the program
    • Starting the VA Computrace program
    • Closing the VA Computrace program
  • 2.3 File menu
    • Method files
    • Determination files
    • Signal files
    • Printing of reports and curves
    • Program exit
  • 2.4 Mode menu
    • Exploratory mode selection
    • Determination mode selection
  • 2.5 Utility menu
    • Computrace control selection
    • Dosimat control selection
    • Film deposition selection
    • Cleaning procedure selection
  • 2.6 User menu
    • Login
    • User rights
    • User rights overview
  • 2.7 Settings menu
    • General settings
    • Hardware settings
    • Automation
    • Save settings
  • 2.8 Window menu
    • Tiling of windows
    • Opening and closing of program windows
    • Display settings for Main window
• 3 General settings for exploratory and determination mode
  • 3.1 Electrodes
    • MME
    • DME
    • SMDE
    • HMDE
    • RDE/SSE
  • 3.2 VA measurement modes
    • DP – Differential Pulse
    • SqW – Square Wave
    • DC – Sampled Direct Current
    • NP – Normal Pulse (for "Exploratory" only)
    • CV – Cyclic Voltammetry
    • PSA – Potentiometric Stripping Analysis
    • AC – Alternating Current Voltammetry
  • 3.3 Potentiostat
  • 3.4 General operation sequence
    • Overview of operation sequence
    • Stirring
    • Purging
    • Conditioning of solid state electrodes
    • Pretreatment
    • Stand-by potential
  • 3.5 Graphical settings
    • Curve window elements
    • Page properties
    • Axis properties
    • Curve properties
    • Line properties
• 4 Exploratory mode
  • 4.1 Exploratory mode overview
    • Exploratory mode features
    • Exploratory mode selection
    • Exploratory mode windows
  • 4.2 Exploratory specification window
    • Exploratory specification settings
    • Load/save signals
    • Transfer parameters and data
    • Performing exploratory measurements
  • 4.3 Exploratory curves
    • Exploratory curves window
    • Load signal curves
    • Select signal curves
    • Zooming
    • Auto scaling
    • Swap axes
    • Graphical properties for exploratory curves
    • Copy to clipboard
    • Change labels
    • Clear signal curves
    • Signal cursor
    • Peak search
    • Edit peak
    • Wave evaluation
  • 4.4 Printing in exploratory mode
• 5 Determination mode
  • 5.1 Determination mode overview
    • Determination mode features
    • Determination mode selection
    • Determination mode windows
  • 5.2 Working method specifications
    • Load/save methods
    • Working method specifications window
    • Determination
    • Voltammetric
    • Substances
    • Baseline
    • Calculations
    • Calculation
    • Variable addition
    • Concentrations of calibration solutions
    • Documentation
    • Dosimats
  • 5.3 Monitor
    • Start determination
    • Stop/Hold determination
    • Monitor determination
    • Message windows during determination
    • Graphical properties for monitoring curves
    • Copy to clipboard
  • 5.4 Determination curves
    • Load/save determinations
    • Copy parameters to working method
    • Determination curves window
    • Edit determination method parameters
    • Specifications
    • Determination
    • Voltammetric
    • Substances
    • Calculations
    • Edit addition parameters
    • Edit baseline
    • Zooming
    • Auto scaling
    • Swap axis
    • Show baselines
    • Show unknown peaks
    • Graphical properties for determination curves
    • Graphical properties for calibration curves
    • Copy/export graphics
  • 5.5 Results
    • Results window overview
    • Header
    • Determination data
    • Sample data
    • Method data
    • Substance evaluation
    • Peak evaluation
    • Calibration data
    • Solutions
    • Final results
    • Copy text to clipboard
  • 5.6 Sample table
    • Load/save sample table
    • Edit sample table
  • 5.7 Printing in determination mode
  • 5.8 Data processing and evaluation
    • Data transfer
    • Data acquisition
    • Background compensation
    • Smoothing and differentiation
    • Peak recognition
    • Baseline calculation
    • Evaluation quantity calculation
    • Content calculation
    • Dilution calculation
    • Standard addition calculation
    • Rules for standard addition
    • Calibration curve calculation
    • Rules for calibration curves
    • Formula calculation
• 6 Manual control
  • 6.1 Computrace control
    • Computrace control selection
    • Computrace control window
  • 6.2 Dosimat control
    • Dosimat control selection
    • Dosimat control window
  • 6.3 Film deposition
    • Film deposition selection
    • Film deposition window
  • 6.4 Cleaning procedure
    • Cleaning procedure selection
    • Cleaning procedure window
• 7 How to ...?
  • 7.1 Installation and program start
    • Install Dosimats for automatic addition
    • Switch on the instruments and start program
  • 7.2 User rights
    • Define a new user
    • Change user rights
  • 7.3 Signals in exploratory mode
    • Load a signal curve
    • Save a signal curve
    • Save signal curves automatically
    • Record a signal curve
    • Evaluate signal peaks automatically
    • Evaluate signal peaks manually
    • Evaluate signal waves
    • Print signal curves and/or voltammetric parameters
  • 7.4 Methods in determination mode
    • Load a method
    • Copy parameters from determination methods
    • Copy parameters from signal files
    • Save the working method
    • Edit the working method
    • Modify methods for automatic background compensation
  • 7.5 Determinations
    • Load a determination
    • Save a determination
    • Automatically save determinations
    • Perform a determination
    • Perform a test determination with the Pb test method
    • Perform determinations using the 813 Compact Autosampler
    • Recalculate an existing determination
    • Print determination results and curves
  • 7.6 Standard addition technique
    • Use manual standard addition without solution exchange
    • Use manual standard addition with solution exchange
    • Use automatic standard addition
  • 7.7 Calibration curve technique
    • Record calibration curve manually by adding standard solution
    • Record calibration curve manually with solution exchange
    • Record calibration curve automatically
    • Measure a sample using a calibration curve
  • 7.8 Work with film electrodes
    • Deposit a mercury film
    • Remove a mercury film
  • 7.9 Diagnostic procedures
    • Check the purging
    • Check the stirring
    • Check the MME
    • Perform a linearity test with the dummy cell
    • Perform a peak test with the dummy cell
    • Perform a GLP test
• 8 Troubleshooting
  • 8.1 General procedure for error messages
  • 8.2 Connection problems
    • Error message "Could not start the embedded system"
    • Error message "Cannot reach the hardware"
  • 8.3 Software problems
    • Error message "No access to software"
    • Error message "The file 'ecousb.sys' is needed"
    • Wrong language in Help
  • 8.4 Dosimat problems
    • Dosimat does not work
    • Irreproducible standard additions with 765 Dosimat
    • Wrong volume display with Dosimat
  • 8.5 General rules for VA trace analysis
    • Chemicals and equipment
    • Electrolytes
    • Standard solutions
    • Samples
    • Blank values, contamination
    • Selection of VA Measurement mode
  • 8.6 Voltammetric problems
    • Low background current or unstable baseline
    • Curves with high noise
    • Standard addition curves are not reproducible
    • Peak displacement
    • No peak found
    • Peak is in the highest uA range
    • Double peak
    • Standard addition peaks displaced
    • No addition
    • Spikes / signal jump in voltammogram
    • Oxygen interference
    • Unsuitable bridging electrolyte in the reference electrode
    • Overcharging of the working electrode
    • Disturbances at the HMDE through gas formation
    • Complex formation
    • Peak on highly curved baseline
    • Peak overlapping
    • Calibration with chemically non-isoformal standards
• Software license
• Index